Steam-boiler



(No Model.) l n 2 Sheet-S-Sheet 2. W. Wi SUTCLIFFB.

sTEAMBoILBR.

No. 455,805. YPatented July '14, 1891.

UNITED STATES PATENT OFFICE.

YVILLIAM XVILSON SUTCLIFFE, OF NEV ORL IANS, LOUISIANA.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 455,805, dated J' uly w14, 189,1. Application iledseptember 19, 1890. Serial No. 365,473. (No model.)

T0 a/ZZ wiz/0772, t may concern.-

Be it known that I, WILLIAM WILSON SUT- CLIFFE, acitizen of the United States, residing at New Orleans, in the State of Louisiana, have invented certain new and useful Improvements in Steam-Boilers; and I do declare the following' to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

My present invention relates to boilers for generating steam, and the primary object I have in View is to utilize the heat resulting from combustion to greater advantage than has heretofore been accomplished.

A further obj ect is to so cons truct the boiler Y that steam will be rapidly generated; and a further object is to protect by a body of water the parts which are exposed to the direct action of the heat, to provide for equal expansion of the exposed parts, and insure greater increased longevity to these parts as well as greater safety in the use of the boiler, as a high-pressure steam-generator.

With these and other ends in View my invention consists in the combination and construction of parts, as will be hereinafter fullyY described, and specifically pointed out in the claims.

To enable others to understand my invention, I have illustrated the same inthe accompanying drawings, in which Figure l is an elevation,partly in section, of a steam-boiler embodying` my present improvements. Fig. 2 is an elevation ofL the boiler, taken from the rear thereof.. Fig. 3 is a side ele\v'ation,with parts in section, of a modified form of the steam-generator, showing a single horizontal boiler. Fig. 4 is a rear elevation of the same.

Like letters of reference denote correspond ing parts in all the iigures oil the drawings.

In carrying my invention into practice I employ two horizontal lre-tube boilers A A, as shown in Figs. l and 2, inclusive, ora single re-tuloe boiler A, (shownin Figs. and l of the drawings) my improvements being equally capable of use in connection with a single or double horizontalboiler, in which the iire-tubes open or extend through the heads of the boilers.

Below the horizontal tubular boiler or boil Between the rear header D of the waterr tubes and each horizontal boiler A, where more than one is employed, is a vertical or pendent tubular water-leg E, which connects said rear header with its boiler, and which pendent leg is of a size corresponding to the combined area of the water-tubes to insure free circulation of the water through the same. The pendent water-leg E communicates centrally with the boiler, so as to provide the passages e e on opposite sides of the leg and between the latter and the side walls of the furnace for the escape of the smoke Vand products of combustion, and when two boilers A A and the independent water-legs E E are employed between said boilers and the rear header the said water-legs are sepa- ,lated `a suitable distance from each other and thus provide a smoke-space e between the same, as shown. As is usual, the water-tubes are subjected to the direct action of the heat, smoke, thc., from the tire on the grate F of ordinary form, and in the preferred embodiment of my invention I secure rearward, upward7 and forward, and return of the smokeI and gases by means of the two partitions G G. These two partitions are arranged in vertically-inclined positions parallel with the water-tubes, the one G being situated immediately above the grate and terminating in rear of and above the bridge-wall fof said grate, while thc other partition G is above the water-tubes with its rear end in Contact or close juxtaposition to the roar header and with its forward end considcrablyjn/advance of the rear end of `the lowerpartition. To insure deterioration ot' the partitions from the direct contact ot' ,the heat, the., I preferably make thesam/e oli' asbestus or a magnesia mixture.v f

By the/described arrangement ofr the partitions/ I am enabled to secure a circuitous course for the smoke, &c.,between the water- IOO 4o horizontal boiler.

tubes, as natural draft from the chimney or stack causes the heat and smoke to Iirst pass rearward beneath the lower partition, then upward and forward between the two parti- 5 tions and in contact with the water-tubes, and

thence rearward over the upper partition; but I do not strictly confine myself to this eX- act arrangement and use of the two horizontal partitions, as I may adapt the arrangelto ment of bridge-walls shown in Fig. 4; or any other arrangement of parts which secures the circuitous course or circulation of heat and smoke around and through the water-tubes.

In Fig. 3 of the drawings I employ two vertical walls [I Il', the one arranged in advance of the other. The front wall II extends upward from the bridge-wall f of the grate nearly to the top of the water-tubes, and the rear wall II extends from the lower side of 2o the elevated boiler or boilers nearly to the botto-m of the water-tubes, whereby the smoke and heat are caused to pass upward and over the front wall II, then downward and underneath the rear partition, and upward again between the rear header and the rear wall II to the outlet-spaces c.

To provide a maximum heating-surface and utilize to greater advantage all the heat in the escaping products of combustion and 3o at the same time quicken the generation of steam, I deem it important to pass 'the products of combustion in rear of the watertubes, the rear header, and the upper horizontal boiler, and to provide for this passage 3 5 of the hot products of combustion I provide partition K extends between the rear headerv and the wall J, and it is on a plane substantially iiush with the upper side of the rear header, and the return-flue plate L extends over the space between the .top of the wall J 5o and the boiler or boilers A. After-the smoke and other highly-heated products of combustion leave the spaces between the water-tubes and the iiues provided by the partitions or \walls hereinbefore described, the same passes through the spaces e in contact with the pendent-.legs E, and then enters the returniiue-chanb-*er I, which conducts the same upward and deli-vers them into the boiler or boilers A A at therear thereof, said `boiler or 6o boilers having the breech-ing or smoke-flue M, leading from the fronuthereof to the chimney or stack, as is usual.

In operation water is fedv to\t`he boilers by any approved appliances (not showp) and thence to the water-tubes, and 'the is started in the combustion chamber. The natural draft of the stack Ior chimney inducts the current of flame, smoke, and products of combustion to circulate aroundv about and through the spaces of the water-tubes, and the fiames, rbc., pursue the circuitous course described until they pass through the spaces c between the pendent water-legs andthe sides of the furnace, after which they enter the back-flue connection I, when the hot currents are returned and delivered into the flues of the upper cylindrical boiler or boilers A A.

It is evident that many slight changes in the form, proportion, and arrangement of parts and in the minor details of construction of the devices herein shown and described as an embodiment of my invention may be made, and I therefore hold myself at liberty to make such modiiicationsas fairly fall wit-hin the. scope and spirit of my invention. I also provide cleaning-out doors P Pin the return or back flue connection, the one above the transverse partition and the other below said partition, as is obvious.

I am aware of Patent No. 291,959, in which drums are used instead of water-legs, and therefore do not claim such construction, as when drums are used it is impossible to. take out a tube or insert one, which is so desirable.

I have found by experience that a tube cannot be removed or inserted through the man-hole, as set forth in the patent referred to.

Having thus described my invention, whatI claim as new, and desire to secure by Letters Patent, is

I. In a steam-generator, the combination of a tine-boiler A, the. inclined water-tubes B, the vertical rear wall J, the overhangingiiueplate L between the vertical rear wall J and the boiler, and the transverse horizontal partition K infront of the wall J and below the flue-plate, the front and rear connections, whereby communication is made withv boiler A and tubes B, substantiallyas described.

2. Ina steam-generator, the combination of the flue-boiler A, the rear header or waterleg- D, the front header C, the water-tubes B, communicating with said header, the waterleg intermediate of the rear header and the boiler and arranged to form. the smoke-passages e, the vertical wall in rear of the header, the transverse partition K between said vertical wall and the header, and the. flue-plate L between the vertical wall and the boiler, for

the purpose described, substantially as' set forth. v

3. In a steam-generator, the combination of the flue-boilers, the water-tubes, the. rear header with which the water-tubes communicate, the front header C, the independent water-legs E between the rear header and the due-boilers and separated to form the smokespaces e, the return-flue connection I,`sit.uated in rear of the boilers, and the watertubes to return the smoke and gases received from the, spaces. about the water-tubesinto the flues of the boilers, substantially as described.

\.\4t. In a steam-generator, the boiler A, com- IOO IIO

posed of tubes or ues arranged as shown, in Combination with the Water-tubes B, front header C, back header D, adapted for the removal and replacement of a tube or tubes,

the intermediate conneetinglegs E, and re turn back-Connection chamber e, adapted for the return and utilization of the products of combustion from the spaces about the Watertubes into and through the boiler tubes or flues into the uptake or breeehing-flue, sub- [o stautially as specified.

In testimony whereof I affix my si gnatu re in presence of two Witnesses.

NVILLIAM WILSON SUTCLIFFE.

Vitnesses:

JAS. M. WALSH, JNO. S. MCDONALD, 

